Cough Piano allows you to play a piano with coughing sounds instead of a normal piano. This is a delight to play, and can be every entertaining. You can also recreate sounds from the keyboard that Ferris Bueller played in the movie "Ferris Bueller's Day Off".
Usage note : for iPad users, please ensure the Mute is not selected (especially the settings for the side switch : Mute or Lock Rotation).
Check Settings --> General --> Sounds and
Settings -> General -> "Use Side Switch to"